Emery N, Hérold C, d'Astuto M, Garcia V, Bellin Ch, Marêché J F, Lagrange P, Loupias G
Laboratoire de Chimie du Solide Minéral-UMR 7555, Université Henri Poincaré Nancy I, B.P. 239, 54506 Vandoeuvre-lès-Nancy Cedex, France.
Phys Rev Lett. 2005 Aug 19;95(8):087003. doi: 10.1103/PhysRevLett.95.087003. Epub 2005 Aug 18.
We have obtained bulk samples of the graphite intercalation compound, CaC6, by a novel method of synthesis from highly oriented pyrolytic graphite. The crystal structure has been completely determined showing that it is the only member of the MC6, metal-graphite compounds that has rhombohedral symmetry. We have clearly shown the occurrence of superconductivity in the bulk sample at 11.5 K, using magnetization measurements.
我们通过一种从高度定向热解石墨合成的新方法获得了石墨插层化合物CaC6的块状样品。晶体结构已被完全确定，表明它是具有菱面体对称性的MC6金属 - 石墨化合物中的唯一成员。我们通过磁化测量清楚地表明了块状样品在11.5 K时出现超导性。
